플래시 방사공정과 플래시스펀 부직포의 연구 동향

• Published in: 한국섬유공학회지 Vol. 62; no. 2; pp. 65 - 80
• Main Authors: 위재형, Jae-hyung Wee, 배영환, Young Hwan Bae, 양병진, Byeong Jin Yeang, 여상영, Sang Young Yeo
• Format: Journal Article
• Language: Korean
• Published: 한국섬유공학회 30.04.2025
• Subjects: flash spinning; flash-spun nonwovens; high barrier property; high density polyethylene; supercritical polymer solution; 섬유공학
• ISSN: 1225-1089; 2288-6419
• DOI: 10.12772/TSE.2025.62.065

Flash spinning is a high-efficiency fiber production process that forms both fibers and nonwoven sheets simultaneously by rapidly evaporating a polymer solution using a volatile solvent under high pressure. This review examines the fundamental mechanisms of flash spinning and the unique structural characteristics of flash-spun nonwoven fabrics. These materials exhibit excellent mechanical strength, breathability, water resistance, and chemical durability due to their continuous filament structure and high porosity. As a result, flash-spun nonwovens are widely applied in various sectors including medical packaging, protective clothing, construction membranes, industrial filters, and specialty packaging. Despite their advantages, the process faces challenges such as the use of environmentally hazardous solvents, limited material compatibility, and difficulties in quality control. Recent research efforts focus on eco-friendly solvent systems, surface functionalization, process simulation, and the integration of biodegradable or functional polymers. Future developments should aim to enhance sustainability and precision in production, positioning flash spinning as a core platform technology for advanced nonwoven materials. This review provides a comprehensive overview of current research trends, technological advancements, and future prospects in the field of flash-spun nonwovens.